Demountable-rim stand



July 31, 1923. 1,463,465

l.. J. GENETTv DEMQUNTABLE RIM STAND l Filed April 12 1920 3 sheets-sheet 1 f7 26- mw 1| f 1V N o l 16A MIEI-MA; m. 1 12.4154 W//fw/ 3\U J y //f/m if? a? WITNESSES `v I Zal/ J eff v 672 July 31, 192a 1,463,465

. L. J. GAENETT DEMOUNTABLE RIM S TAND Filed April 12 ,l 1920 3 Sheets-Sheet 2 'WITNESS/Fs: i jaw@ digg/EN1ro/Ze?` '19Vl mw: g' n.

HIS A T T ORNE 'Y July 31, 1923. 1,463,465

\ L. J. GENETT DEMOUNTABLE RIMv STAND FiledApril l2 1920 3 SheebS-Sheeb 5 l ATTORNEY Passau July si, i923..

UNITED stares rA'rENrj-osricl-z;L;

LOUIS J. GENETT, 0F MABQUETTE,VMICVHIGAN, ASSIGNORiOF ONE-,HALF T0, JOI-IN IVI. LONGYEAR, JR., OF MARQUETTE, MICHIGAN.

DnMoUNrABLn-BIM STAND.

ApplicationA led April 12, 1929. Serial No. 373,182.

sists in thejfeatures and yelements of construction described andshownin the dra-wgc, as indicated by the claim.

In the drawings:

Figure 1. is a top planview of a device embodying this invention and a demountable rim in position thereon ready forj manipulation for application or removal ofthe tire.

Figure l2 is a transverse section, taken as indicated at line 2-2, on Figure 1.

Figure 3 is a plan view taken similarly to Figure 1, but showing the parts in position for expanding the rim to separate its interlocked'ends as shown in the drawing.

Figure 4 is a view taken similarly to Figure 3, but showing the parts contracting the rim and overlapping one end upon the other at the joints for reducing itsdiameter to facilitate removal or application of the tire.

Figure 5 is a fragmental sectional view taken'as indicated at line 5*-5, on Figure 4, to disclose certain features of construction. The usual form of demountable rim for carrying an automobile tire is a circular anged or grooved band cut through at one point making it a split ring, and provided at this point with interlocking features for making a butt joint of the cut ends of theY band, secure against lateral displacement. The drawings show such a tire-carrying rim, A, whose end portions, Band C, form a kbutt joint and are fitted with interlocking plates or cleats, D and E, respectively, which are mutually engaged, as indicated in Figure 2, when the rim is in its normal circular form. Since the tire is dimensioned to fit snugly around the rim when ends, B and C, are connected in the position shown in Figure 1, it is a matter of some difficulty to separate these ends suiciently for disengaging the interlapped cleats, D and E,'which is necessary before the rim can be contracted enough to permit removal of the tire. The present invention is arranged to supportthe rim and tire during this operation and to provide such mechanical advantage forl the expan# sion the manipulation of the rim, asv will render the removal of the tire comparatively easy and rapid. j v, y

The device comprises a base, 1, supporting applate or disk, 2, having an up-standing rib or flange, 3, whichv is fitted with a clamp, 4, designed to engage the rim, A, at a pointapproximately opposite the joined ends,"'B` and @said clamp including the upper edge, 5, of the flange orrib, 3, and the movable jaw member, 4, held in psition` by a'wing nut, 6, on a threaded stem or bolt, 7 having a bifurcated head orterminal, 8, with a bolt r pin, 9, extending through one of the holes, 10, in the rib or flange, 3,'-a series yof such holes` being provided to accommodate the device to various sizesA of rim. l

Vhen the rim, A, has been secured by the clamp, 4, it is engaged by additional clamps, 11, 12 and `13, the clamps, 11 and 12, takingV hold of the" rim at oppositesides of its joint, and the clamp, 13, engaging it"adjacent the joint "and between the other two. The clamps, 11 and 12, are connected by links, 14 and 15, respectively, with oppositely eX- tending arms, 16 andv17, of a sleeve lor hub, 18, whichis rotatably mounted onthe upstanding hollow post, 19, of the base, 1, and provided with the radially-extending handle, 20, by which it may be rotated upon said post, 19, through a limited angle. The base plate, 2, is formed with aL toothed segment, 21, concentric with respect to the axis 0f the post, 19, and the handle, 20, is provided with a locking dog, 22, yieldingly held in engagement with said toothed segment by means of a spring, 23, adapted to be withdrawn and released therefrom by a handle, 24, pivoted adjacent the main handle, '25, of the lever, 20. The dog, 22, being thus released, the lever, 20, is swung in a direction for thrusting the links, 14 and 15, outwardly to expand the rim to the position shown in full line in Figure3, thus separating its end portions, B and C, and the interlocked plates, D and E, thereon. A second hand lever, 26, fulcrumed on the base by means of a shaft, 27, j ournaled within the hollow post, 19, is then rocked in a direction for pulling inwardly-upon .the end portion, C, ,by means of the llink, 28, connected `to the clamp, 13, at one end and to theiarin, 29, Which eX- tends from the shaft, 27, at its. lower end Within the-base, 1,-ot the device. -As shown f in Figure l, the link, 28,'is 'twisted and bent theleyento the position 4shown in .dotted lf es thereon thus-'mores the end-pori-V tio-n, C, of the rim tothe dotted line Lposition shown in said Figure' 3, Aby which 1t :is moyed out off-alignment with the Iend portion, 13, preparatory to Contracting sufiito Arelease 'it from a tri-freer to permit .the easy replacement of the tiere thereon.

The final step ,the `operation consists in new contracting the rim by e movement of thel loyer, 2Q, in Ya .direction opposite to lits initial movement, pulling inwardly upon its connected links, 14 and 15 .thus di-anfing the oppositefsides Kof' the rim toward each other and forcing th-e :end portions, Band C, to over-lap eachother as shown in Figure 4. The rim is held in this position by engagementof the dogyvith a tooth of the segment,

l2 l,\and -iyhile fthepartsiare thus held, .a tire may. be slippedfoi from tlie rimfor replaced thereon. In the latter'oase the loyer, 20, is then swung boe-loto the position `in which it is y shown in vFigure 3,` fthe leyer, A2 6, is then moyedftrom Yits'dotted line posit-ion toits qugll linefposition show-n 'in ythat ligure, and finally thelever, 2.0, .is returned te its pesition illustrated in 1Figure 1 in `Awhich it draws together the Valigned ends, :and IC, off tlfie rim, A, for nominalinterlocking engage-ment .off tliellates D and )As sho-Wn, veach of the opemating lin-lits, 14, 115 ,and 28, is V,perovided with clamp devices, ll, l2 and lf3, whicharefqnite similar in ,con- Vsftimiction to the clamps, 5l, provided tor Securing the poration of the rien opposite the joints, 'By reason of the hooked iorination ofthe v,clainlip'-ng members,and the pull or pgish ,of .the links to which .they are attached being almost directly against these hooks, it is not necessary thatthe clamps be secured very tightly. `Thus by providing a Wing nut 'for them, they can -be adjusted v-or removed very-quiclly and the entire operation of applying or removing a tire to a rim of this type 'can be accomplishedin a few seconds. As vsuggested in Figure 2, the base, 1, may be `mounted for Vertical extension of the base plate, 2, and-,supported upon a post shown in dotted lines at 32, with abase, 33, or, if preferred, the post and base maybe omitted and the ,base castin-gal, may be mounted upon a ner-tical wall, V so that the rim and tire'will bepositoned in .a Avertical 'plane -dnringfthe operation; in either oase port, rim securing rmeans .fix-edi thereon, .an

adj ustng memberrotatably .fulcrurned on the support, .a pair of links'- eccentrically pivoted :to ,saidnieniber at opposite sides of its axis and terin inating in pivotally vattached Clamps adapted to engage 'the rim at opposite sides of a Asonarable joint, together with a detorming device tulcrumed on said support too axially with the adjusting `member and including a piyoted link terminating in va pivot-ally .att-,ached lclamp positioned toengage vthe Yrin-i Ynear its separabkj-oint,

said link being Ia rigidvmernber adaptedvfor moving the end portion'of the rim inwardly or outwardly. i

In testimony whereof I have vhereu I 1t'oset my handat Chicago, illinois, this '30th day ol March, 1,920. y

e LOUIS J,v GENETT. 

